Raphaël touche un nerf sensible

Arnaud worries that their new teacher, Miss Bille-en-Tête's sister, may be altering the classroom ecosystem. The students set off on an adventure to discover the interrelation of species and invasive species.

An excursion to the world's windiest mountain helps Kisha and the class understand the types of structures and the natural forces acting on them.

Miss Bille-en-Tête takes the class to Hawaii, where Véronique discovers the physical characteristics, locomotion and behavioral adaptation of fish.

Thomas creates a comic strip in which Storm Man takes on Captain Roc de Pierre. Who will win? With classmates, he explores the rock cycle and rock types.

While visiting a mountain, Raphaël and the class shrink to the subatomic scale and explore the magnetic force.

The class explores the immune system and allergic reactions by traveling inside Carlos' body.

Anne-Sophie and her classmates deploy the art of animal camouflage to win an extreme game of hide-and-seek.

A lesson on water and its three basic phases - solid, liquid and gaseous - inspires Jyot for her participation in an important competition.

A stellar excursion catapults the students into space. Kisha and her friends discover satellites and space debris.

The captivating story of a glacier helps Anne-Sophie understand the changes on planet Earth through history, and the negative impact of climate change.

Arnaud turns to renewable energy sources to overcome his fears on a camping trip with Miss Bille-en-Tête.

Miss Bille-en-Tête transforms the Magic Bus into a submarine to take the class to the ocean floor and discover the marine species that live there.

When the class is invited to participate in Thomas' favorite game show, the bus takes the students back in time to see how the fossils are formed.

The science class is in disarray and all the pepperoni slices have been stolen. All the clues point to Véronique's best friend, Martine la pie.